Difference between java page flow and java process definition

I have joined a BEA WebLogic Integration project as an entry level BEA developer. I have a big question on the real difference between a jpf and a jpd. My co-workers say there is actually no difference, but I don't believe so. I think a jpd is more like a back-end process and it may or may not not need a View(MVC). While a jpf is the Controller(MVC) and is closely related to a web-based application where all the navigation logic(and only navigation logic) resides. A jpf normally should have a View(rendered on browser or other terminals) to present data from Model. I strongly believe this is true. But my project manager and my team lead, both are very technical guys, fiercely object to my understanding. I am extremely curious to have input from the BEA community on this fundamental concept.

I find it hard to believe your team lead really believes there is no difference between a JPF and a JPD. There are numerous differences, both conceptually and technically.
I believe your understanding of the differing roles of the two is correct. A JPF would represent the view of an application, and a JPD would represent callable services of an application, and server-side business logic.
From the technical point of view, a JPF, assuming it avoided certain features, can be deployed on Tomcat. The core of it is a pure servlet application. A JPD is an EJB, either a SLSB or a SFSB.

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